Planing-machine.



A. W. NELSON.

PLANING MACHINE.

APPLICATION FILED APR.2B,1913.

1 ',1 1 1,702. Patented Sept. 22, 1914.

[77 F672 far E AORRIS PETERS cor, PHOm-LITHO. WASHINGTON D. 1:.

UNITED' STATES PATENT OFFICE;

ARTHUR W. NELSON, OF WILLIAMSPORT, PENNSYLVANIA, ASSIGNOB, TO vII1.R.1\(IAI TOil-l MAC HINEYCQMPANY, OF WILLIAMSPORT,.PENNSYLVANIA, ACORPORATION OF PENNSYLVANIA.

PLANIN G-MACHINE.

Specification of Letters Patent. Patentd Sept.

Application filed April 28, 1913 Serial No. 764,112.

To all whom it may concern:

Be it known that I, ARTHUR W. NELSON, a citizen of the United States ofAmerica, residing at W illiamsport, in the county of Lycoming and Stateof Pennsylvania, have invented certain new and useful Improve ments inPlaning-Machines, of which the following is a specification, referencebeing had therein to the accompanying drawings.

My invention relates to feed mechanism of planing machines and has amongthe ob jects thereof to provide a novel construction whereby thecooperating feed rolls may be readily separated so as to permit the Workto be inserted therebetween or withdrawn therefrom; to provide such ameans which will also serve to retain the rolls in the de sired spacedrelation and will permit this spaced relation to be readily varied; andfurther to provide a construction which Wlll move the chip breaker awayfrom the bed upon the separation of the feed rolls.

The invention resides in the peculiar construction, arrangement andcombination of parts as will more fully hereinafter appear and asclaimed.

In the drawings,Figure 1 is a fragmentary plan view of a machineembodying my invention; and Fig. 2 is a side elevation, partly insection.

A designates the bed of the machine; B a cutter head-herein shown asarranged above the bed A and C is the chip breaker, positioned inadvance of the cutter head.

D E and F G are cooperating pairs of feed rolls.

One member of each pair of feed rolls, as the upper members D F, aremounted so as to be moved away from the members E G. Thus the member Dis attached to a shaft D journaled in a sleeve D of an arm H, mountedfor rocking movement upon a pivot I, while the shaft F of the member Fis journaled in the sleeve F of an arm J, fulcrumed at K to a portion ofthe frame. The members D F are normally pressed toward the rolls E G bya weighted arm L in the usual manner, and movement of the rolls D Ftoward their cooperating members is limited by means of a slide M havingcams or inclines N O engaging the sleeves D F The slide M is adapted tobe longitudinally shifted through the medium of a lever P fulcrumed at Qfor movement in a I horizontal plane upon the frame of the machine andsecured to the slide by means of a link R having its opposite endspivotally connected to the lever and the slide. Thus upon shifting ofthe lever P in one direc tion the slide is adjusted rearwardly, or tothe position shown in dotted lines in Fig. 2, thereby raising thebearings D F and separating the feed rolls. When the lever is moved inthe opposite direction, the slide M will be adjusted inwardly. Inwardmovement of the slide however, is limited by means of a set-screw S onan extension T of the slide. By adjusting the screw S the normal spacedrelation of the cooperating feed rolls may be varied as desired. It isalso ad isable to so mount the chip breaker that upon the separation ofthe feed rolls the chip breaker will be moved away from the bed. This isaccomplished by providing an arm U which is secured at one end to thechip breaker and carries at its opposite end a screw V adapted to restupon the sleeve D The chip breaker is also mounted upon a rockable armas W and therefore, upon the raising of the sleeve D the chip breakerwill be correspondingly adjustable. Preferably the length of the screw Vmay be adjusted so as to properly osition the same in relation to thefeed rol s and to the bed.

What I claim as my invention is 1. In a planing machine, the combinationwith a plurality of pairs of feed rolls, the members of each pair beingrespectively positioned upon opposite sides of the line of feed,rockable means carrying one member of each pair upon the same side ofthe line of feed, a shiftable slide adapted to rock said means to movethe rolls carried thereby away from their cooperating members, saidslide serving to maintain the rolls in normal spaced relation, anextension on said slide, means for limiting the inward movement of saidextension, a lever pivoted for movement in a horizontal plane andconnected to said slide to effect the shifting thereof, and means forvarying the relation of the slide to said rockable means to adjuit thenormal spaced relation of the feed ro s.

2. In a planing machine, the combination with a pair of feed rollspositioned upon opposite sides of the line of feed, of a rockablesupport for one of said rolls permitting the same to be r noved awayfrom the ojzher, and said chinbreakeii 'ai'wav irom ti'ie of a secondfockable snpport "partially" 'eXt'end feedf" ing ove saidfirst-mentioned support, an ad- In testimony whereof I affix mvsignature jnsfi bl esorewari anged in said portion over in presence oftwo witnesses] said support; adapted to rest upon said first- ARTHTTNELSON. mentioned support, a chip-breaker l pon the \Nitnesses:

second rockable support, and means for sfi- WM. J. BELKNAP,

Inuitalleouslv adillsting said movable r ol l s ngs P. BARRY.

Copies of this patent may be obtained for 'fi veeeiits eecigbyaddressing the Commissioner of Patents, WashingtonID. C.

